US2121955A - Pneumatic tire tread - Google Patents
Pneumatic tire tread Download PDFInfo
- Publication number
- US2121955A US2121955A US85099A US8509936A US2121955A US 2121955 A US2121955 A US 2121955A US 85099 A US85099 A US 85099A US 8509936 A US8509936 A US 8509936A US 2121955 A US2121955 A US 2121955A
- Authority
- US
- United States
- Prior art keywords
- tread
- pneumatic tire
- tire
- ribs
- slits
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/04—Tread patterns in which the raised area of the pattern consists only of continuous circumferential ribs, e.g. zig-zag
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/0306—Patterns comprising block rows or discontinuous ribs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
- B60C11/1272—Width of the sipe
- B60C11/1281—Width of the sipe different within the same sipe, i.e. enlarged width portion at sipe bottom or along its length
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S152/00—Resilient tires and wheels
- Y10S152/03—Slits in threads
Definitions
- This invention relates to pneumatic tires, and in particular it relates to pneumatic tire treads v and to the structural formation of the antiskid 1 formation to increasethe eiliciency of such tires I in operation.
- the invention refers to a pneumatic tire having a tread comprising a plurality of relatively narrow. circumferential ribs divided circumferentially by a pluralltycf transverse incisions such as slits or narrow slots '1. having their bases terminating in openings which I extend parallel with the slits.
- An object of my invention is to prevent cracking of slit or slotted tread tires; another object is to permit the treadto be slit to a depth substantially equal to the wearing portion of they tread; and a further object is to permit the slits ll to be spaced a less distance apart.
- Fig. 2 is aside elevational view of a portion of the tire shown in Fig. 1; and Fig. 3 is a similar view illustrating a modified form of the invention.
- I showapneumatic tire I having a carcase I of strain resisting'elements, inextensibie bead elements 3 and l. and a wear resistant tread I of rubber composition.
- the tread 5 isillustratedin the 45 form of a plurality of "circumferentially extend-- ing ribs t n- While the features of my invention are applicable to treads having designs of various configurations, I prefer its application to a .tread design of plain, circumferential rlbs.- It so h'asbeen demonstrated that a tread comprising circumferential ribs of a width within deilnite limitations shows a substantial improvement in antiskid qualities, particularly on wet road sur- 3 faces. It is well known that a tread of rib foras mation is relatively quiet in operation.- Such a tread is particularly improved after. subjection to the present method'of tread treatment.
- the width of the ribs should not'be less than 3 percent of the normal width of the tire in crosssection, and s that the maximum'wldth' of the rib should not exceed 8 percent of the normal width of the tire in cross section.
- the dimension x as shown in' Fig. l should beequai to from 3 to 8 percent of the dimensional character Y. 10
- Fig. 2 illustrates a side view of the tire i and shows the proportionate size of the apertures 8.
- the vrib formation t is defined by a plurality of grooves 9, having bases Ill. 1
- the apertures 8 are positioned slightly above the bases ll of the grooves so that the apertures 8 which lie between the grooves s will be free from the curvatures at the bases it. While the apertures 8 are shown in the form of circular openings, it is to be understood that they may be of various shapes such as that indicated in Fig. 3, wherein a tire I ii is provided with apertures I! in the form 0! triangular-openings which communicate with slits ll. Any form of opening at the bases of the slits is sufllcient to accomplish the advantages of the present invention, provided the bases of the apertures are flat or substantially flat, or
- the size of the aperture is somewhat determined by the method used to provide such apertures in the tread. For example, a hot wire may be forced into the slit of the tread and permitted to lodge at the 56 base of the slit for a short period. In such case the resulting aperture will be relatively small.
- the apertures may also be produced by a knife having the combined shape of the-slit and the opening at the base of the slit. In such case a sense of the. word, that is by making. incisions the slit and the aperture may be cut into the tread in the same operation.
- transverse apertures in the tread by providing removable pins in the mold, and forming the apertures in the rubber during vulcanization of v the tire. m such case the tire would be subsequently slit in such manner that the cuts would extend into the previously formed apertures.
- the slits and communicating apertures may extend in a wide variety of patterns, such as diagonally of the circumferential ribs, or they may extend only into certain of the ribs or combinations thereof, depending upon the particular slit formation desired.
- a pneumatic tire having a carcass of strain resisting elements and an outlying tread of vulcanized and wear resistant rubber composition, said tread having an antiskid configuration and being provided with a plurality of relatively small openings extending more transversely than circumferentially located between the ground-contacting surface of the' tread and the underlying carcass, said tread being provided with slits extending from said openings outward to the ground contacting surface of the tread,,the'walls defining said slits being substantially parallel and spaced apart a substantially less distance thanthe width of said openings.
- a pneumatic tire having acarcass of'strain resisting elements and an outlying tread of vulcanized and wear resistant rubber composition, said tread being provided with anantiskid configuration defined by grooves -molded into the tread, and said tread being provided with a" multiplicity of small openings extending more transversely than circumferentially located between the ground contacting surface. of the tread and the bottoms of said grooves,said tread being provided with incisions substantially narrower than said openings and extendin'g'from said openings' to the ground contacti-ngsurface of the tread.
- a pneumatic tire having a carcass'of strain resisting elements and an outlying" tread of vulcanized and wear resistant rubber.
- said tread being providedwith a plurality of cir-' cumt'erentially extending ribs, each of said ribs beingprovided with a plurality of relatively small openings extending relatively transversely of the ribs and located between the outer free face of each rib and its base, and an incision extending from each of said openings outwardly to the outer free face of the rib in which the opening is provided.
- a pneumatic tire comprising a carcass of strain resisting elements and a tread of rubber composition defining antiskid elements which are interrupted by spaced incisions of a widthsuch that when under load their side walls engage for appreciable distances for mutual support and terminating in enlarged openings for the prevention of crack propagation into the underlying rubber composition.
- a pneumatic tire comprising a carcass of strain resisting elements and a tread of rubber composition defining antiskid elements which are 1 walls are subinterrupted by spaced slits whose stantially parallel and normally in engagement 7 for a considerable distance and which terminate 7-.
- a pneumatic tire comprising a carcass of strain resisting elements and a tread of rubber composition defining circumferential, functionally continuous ribs and intervening grooves, said ribs having spaced slits whose walls are substantially parallel and normally in engagement for a considerable distance and which terminate well within the tread rubber composition in enlarged openings for the prevention of crack propagation into the underlying rubber composition.
- a pneumatic tire comprising a carcass of strain resisting elements and a tread of rubber composition defining circumferential, function- 'ally continuous ribs of a width of the order of from 3 to 8 percent of the maximum width of i the tire and intervening grooves, said ribs having spaced incisions of a width such that when under load their side walls engage for appreciabledis+ tances for mutual support and terminating in enlarged openings for the prevention of crack propagation into the underlying rubber composition.
- a pneumatic tire comprising a carcass of strain resisting elements and a tread of rubber composition defining circumferential, functionally continuous ribs of a width of the order of -from 3' to 8 percent of the maximum width of the tireand' intervening grooves, said ribs having spaced slits whose walls are substantially parallel and normallyin engagement for a considerable distance and which terminate well within the tread rubber composition in enlarged openings forthe prevention of crack propagation into the underlying rubber composition.
Description
PNEUMATIC TIRE TREAD Filed June 15, 1956 'June2s,.193s.-
Patented June 28, 1938 UNIT b S-TATES ensues mm ms'raasn Ernst EgerrGrossel'ointe Michsarslgnor to United States Rubber Products, Inc. New
York, N. 1., a corporation of Delaware Application June 18.1838, Serial No. we
' s can. (oi. use-zoo).
This invention relates to pneumatic tires, and in particular it relates to pneumatic tire treads v and to the structural formation of the antiskid 1 formation to increasethe eiliciency of such tires I in operation. In general, the invention refers to a pneumatic tire having a tread comprising a plurality of relatively narrow. circumferential ribs divided circumferentially by a pluralltycf transverse incisions such as slits or narrow slots '1. having their bases terminating in openings which I extend parallel with the slits. I
. In tires having treads with transverse slits or narrow slots for improving skid qualities there 7 I is a tendency for the bases to continue to extend l6 deeper in the form of cracks. To overcome this conditionit has been the practice to slit the tire to a relatively shallow depth, less, than the depth of the tread rubber, and to space the slits a substantial distance apart. Y
20 An object of my invention is to prevent cracking of slit or slotted tread tires; another object is to permit the treadto be slit to a depth substantially equal to the wearing portion of they tread; and a further object is to permit the slits ll to be spaced a less distance apart. As a result of these objects a tire of improved antiskid and wearing qualities is obtained. These and other objects and advantages will appear more fully inthe following detailed de- 80 scription -when considered in connection with the accompanying drawing, in which:-,- Fig. 1 is a transverse view, in section and in perspective, of a portion of a pneumatic tire embodying my invention;
- ll Fig. 2'is aside elevational view of a portion of the tire shown in Fig. 1; and Fig. 3 is a similar view illustrating a modified form of the invention.
Referring to the drawing, and in particular to 40 Fig. 1, I showapneumatic tire I having a carcase I of strain resisting'elements, inextensibie bead elements 3 and l. and a wear resistant tread I of rubber composition.
In formation the tread 5 isillustratedin the 45 form of a plurality of "circumferentially extend-- ing ribs t n-While the features of my invention are applicable to treads having designs of various configurations, I prefer its application to a .tread design of plain, circumferential rlbs.- It so h'asbeen demonstrated that a tread comprising circumferential ribs of a width within deilnite limitations shows a substantial improvement in antiskid qualities, particularly on wet road sur- 3 faces. It is well known that a tread of rib foras mation is relatively quiet in operation.- Such a tread is particularly improved after. subjection to the present method'of tread treatment.
Experiments have indicated that the width of the ribs should not'be less than 3 percent of the normal width of the tire in crosssection, and s that the maximum'wldth' of the rib should not exceed 8 percent of the normal width of the tire in cross section. In other words, the dimension x as shown in' Fig. lshould beequai to from 3 to 8 percent of the dimensional character Y. 10
Subsequent to the vulcanization of the tire, the tire tread is subjected to a slitting operation for producing narrow cuts or incisions 'l in the tread transversely of the ribs. The bases of these slits terminate insmall apertures 8 which extend parallel with the slits. Fig. 2 illustrates a side view of the tire i and shows the proportionate size of the apertures 8. The vrib formation t is defined by a plurality of grooves 9, having bases Ill. 1
1 As shown in Fig. 2, the apertures 8 are positioned slightly above the bases ll of the grooves so that the apertures 8 which lie between the grooves s will be free from the curvatures at the bases it. While the apertures 8 are shown in the form of circular openings, it is to be understood that they may be of various shapes such as that indicated in Fig. 3, wherein a tire I ii is provided with apertures I! in the form 0! triangular-openings which communicate with slits ll. Any form of opening at the bases of the slits is sufllcient to accomplish the advantages of the present invention, provided the bases of the apertures are flat or substantially flat, or
curved as in the lower portion of a circular ap- 35 erture, as such shapes being free from sharp B tend to prevent crack propagation t w the carcass 2.
strength of the ribs. I'flnd, however; that god c" it results are obtained from a tire having apr-ftures which measure from about inch to /8 inch in general diameter. The size of the aperture is somewhat determined by the method used to provide such apertures in the tread. For example, a hot wire may be forced into the slit of the tread and permitted to lodge at the 56 base of the slit for a short period. In such case the resulting aperture will be relatively small. The apertures may also be produced by a knife having the combined shape of the-slit and the opening at the base of the slit. In such case a sense of the. word, that is by making. incisions the slit and the aperture may be cut into the tread in the same operation.
It 'is also possible to produce the transverse apertures in the tread by providing removable pins in the mold, and forming the apertures in the rubber during vulcanization of v the tire. m such case the tire would be subsequently slit in such manner that the cuts would extend into the previously formed apertures.
While I prefer to make slits in the limited without the removal of substantiallyany of the tread rubber; yet the invention isapplicable to narrow slots or incisions whose side walls are normally out of engagement, such as would be produced by a saw cut, but which engage for cooperative support when a loadl's applied, and such slots are included in the term incisions" as herein used.
While I have shown the slits and communicating apertures extending transversely of all of the circurnferentially extending ribs, it is to be understood that the slits and their accompanying base apertures may extend in a wide variety of patterns, such as diagonally of the circumferential ribs, or they may extend only into certain of the ribs or combinations thereof, depending upon the particular slit formation desired.
While I have shown and described certain preferred embodiments of my invention, it will be understood that modifications may be made therein without departing from the spirit of the invention or the scope of the appended claims.
Having thus described my invention, what I claim and desire to protect by Letters Patent is:-
1. A pneumatic tire having a carcass of strain resisting elements and an outlying tread of vulcanized and wear resistant rubber composition, said tread having an antiskid configuration and being provided with a plurality of relatively small openings extending more transversely than circumferentially located between the ground-contacting surface of the' tread and the underlying carcass, said tread being provided with slits extending from said openings outward to the ground contacting surface of the tread,,the'walls defining said slits being substantially parallel and spaced apart a substantially less distance thanthe width of said openings.
2. A pneumatic tire having acarcass of'strain resisting elements and an outlying tread of vulcanized and wear resistant rubber composition, said tread being provided with anantiskid configuration defined by grooves -molded into the tread, and said tread being provided with a" multiplicity of small openings extending more transversely than circumferentially located between the ground contacting surface. of the tread and the bottoms of said grooves,said tread being provided with incisions substantially narrower than said openings and extendin'g'from said openings' to the ground contacti-ngsurface of the tread.
3. A pneumatic tire having a carcass'of strain resisting elements and an outlying" tread of vulcanized and wear resistant rubber. composition;-
" said tread being providedwith a plurality of cir-' cumt'erentially extending ribs, each of said ribs beingprovided with a plurality of relatively small openings extending relatively transversely of the ribs and located between the outer free face of each rib and its base, and an incision extending from each of said openings outwardly to the outer free face of the rib in which the opening is provided.
4. A pneumatic tire comprising a carcass of strain resisting elements and a tread of rubber composition defining antiskid elements which are interrupted by spaced incisions of a widthsuch that when under load their side walls engage for appreciable distances for mutual support and terminating in enlarged openings for the prevention of crack propagation into the underlying rubber composition.
5. A pneumatic tire comprising a carcass of strain resisting elements and a tread of rubber composition defining antiskid elements which are 1 walls are subinterrupted by spaced slits whose stantially parallel and normally in engagement 7 for a considerable distance and which terminate 7-. A pneumatic tire comprising a carcass of strain resisting elements and a tread of rubber composition defining circumferential, functionally continuous ribs and intervening grooves, said ribs having spaced slits whose walls are substantially parallel and normally in engagement for a considerable distance and which terminate well within the tread rubber composition in enlarged openings for the prevention of crack propagation into the underlying rubber composition.
8. A pneumatic tire comprising a carcass of strain resisting elements and a tread of rubber composition defining circumferential, function- 'ally continuous ribs of a width of the order of from 3 to 8 percent of the maximum width of i the tire and intervening grooves, said ribs having spaced incisions of a width such that when under load their side walls engage for appreciabledis+ tances for mutual support and terminating in enlarged openings for the prevention of crack propagation into the underlying rubber composition.'
-9. A pneumatic tire comprising a carcass of strain resisting elements and a tread of rubber composition defining circumferential, functionally continuous ribs of a width of the order of -from 3' to 8 percent of the maximum width of the tireand' intervening grooves, said ribs having spaced slits whose walls are substantially parallel and normallyin engagement for a considerable distance and which terminate well within the tread rubber composition in enlarged openings forthe prevention of crack propagation into the underlying rubber composition.
v ERNST EGER.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US85099A US2121955A (en) | 1936-06-13 | 1936-06-13 | Pneumatic tire tread |
GB15625/37A GB474588A (en) | 1936-06-13 | 1937-06-05 | Improvements in pneumatic tyre treads |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US85099A US2121955A (en) | 1936-06-13 | 1936-06-13 | Pneumatic tire tread |
Publications (1)
Publication Number | Publication Date |
---|---|
US2121955A true US2121955A (en) | 1938-06-28 |
Family
ID=22189455
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US85099A Expired - Lifetime US2121955A (en) | 1936-06-13 | 1936-06-13 | Pneumatic tire tread |
Country Status (2)
Country | Link |
---|---|
US (1) | US2121955A (en) |
GB (1) | GB474588A (en) |
Cited By (45)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2701598A (en) * | 1951-09-25 | 1955-02-08 | Goodrich Co B F | Tire tread |
US2784835A (en) * | 1952-10-02 | 1957-03-12 | Goodrich Co B F | Skid-resistant conveyor belting |
US2962072A (en) * | 1959-04-27 | 1960-11-29 | Frank O Skidmore | Pneumatic tire and method of making the same |
US3115919A (en) * | 1962-04-27 | 1963-12-31 | Armstrong Rubber Co | Tire tread |
US3511290A (en) * | 1965-09-07 | 1970-05-12 | Dunlop Co Ltd | Tires |
US3544423A (en) * | 1967-06-01 | 1970-12-01 | American Biltrite Rubber Co | Loom roll cover |
US3556190A (en) * | 1967-04-21 | 1971-01-19 | Dunlop Co Ltd | C tires |
JPS62241712A (en) * | 1986-04-14 | 1987-10-22 | Ohtsu Tire & Rubber Co Ltd | Tread part structure of pneumatic tire |
US4807679A (en) * | 1987-06-11 | 1989-02-28 | The Goodyear Tire & Rubber Company | Pneumatic tire tread having sipes |
US4856571A (en) * | 1987-06-11 | 1989-08-15 | The Goodyear Tire & Rubber Company | Pneumatic tire |
US4926919A (en) * | 1988-11-14 | 1990-05-22 | The Goodyear Tire & Rubber Company | Vehicle tire with rib type tread pattern having sipes across the ribs |
US5385189A (en) * | 1991-11-01 | 1995-01-31 | Bridgestone Corporation | Pneumatic tire with paired sides in the tread |
US5795415A (en) * | 1994-02-22 | 1998-08-18 | Pirelli Coordinamento Pneumatici S.P.A. | Medium/heavy duty motor-vehicle tires provided with a tread of the universal type |
US5801304A (en) * | 1995-10-09 | 1998-09-01 | Pirelli Coordinamento Pneumatici S.P.A. | Method of foreseeing tread wearing of a pneumatic tire |
US6151959A (en) * | 1996-10-10 | 2000-11-28 | Pirelli Coordinamento Pneumatici Spa | Pneumatic tire having tread wear detectors |
US6202725B1 (en) * | 1997-02-27 | 2001-03-20 | Bridgestone Corporation | Pneumatic tire and vulcanization mold used for the manufacture thereof |
US6213181B1 (en) | 1998-01-26 | 2001-04-10 | Michelin Recherche Et Technique S.A. | Tire having a groove wall lining for reducing formation of anomalies causing subjective user dissatisfaction |
WO2002038399A2 (en) * | 2000-11-13 | 2002-05-16 | Societe De Technologie Michelin | Tyre running tread and moulding element of a mould for such a tread |
US6443200B1 (en) * | 1999-03-10 | 2002-09-03 | Michelin Recherche Et Technique S.A. | Tread including relief elements having undercut lateral walls and incision that does not cut into ridge |
US20040016491A1 (en) * | 2001-01-29 | 2004-01-29 | Michelin Recherche Et Technique S.A. | Tread which reduces running noise |
US20060137793A1 (en) * | 2004-12-28 | 2006-06-29 | Goodyear Tire And Rubber Company | Siped tire tread with high transverse stiffness |
US20070095447A1 (en) * | 2005-10-31 | 2007-05-03 | Nguyen Gia V | Pneumatic tire tread |
US20070295435A1 (en) * | 2006-06-26 | 2007-12-27 | Gia Van Nguyen | Tire and tire tread with sipes of defined curvature |
US20100059156A1 (en) * | 2008-09-11 | 2010-03-11 | Cambron Anne-France Gabrielle | Pneumatic tire |
WO2010076521A1 (en) * | 2008-12-31 | 2010-07-08 | Societe De Technologie Michelin | Tyre-vulcanising mould including an array of grooves and notches |
US20100258228A1 (en) * | 2007-12-21 | 2010-10-14 | De Benedittis Eric A | Mechanisms for ejecting objects from a tire tread |
US20110030863A1 (en) * | 2008-03-17 | 2011-02-10 | Radulescu Robert C | Tire with apertured shoulder block for improved temperature control |
US20110108176A1 (en) * | 2008-07-10 | 2011-05-12 | Bridgestone Corporation | Tire |
US20110139325A1 (en) * | 2009-12-11 | 2011-06-16 | Joseph Thomas Janesh | Tire tread having serrated grooves |
US20110168311A1 (en) * | 2008-09-11 | 2011-07-14 | Michelin Recherche Et Technique S.A. | Variable surface area tire tread and tire |
US20120006458A1 (en) * | 2008-12-05 | 2012-01-12 | Michelin Recherche Et Technique S.A. | Tire Tread Comprising Incisions and Recesses |
US20120180919A1 (en) * | 2009-03-18 | 2012-07-19 | Societe De Technologie Michelin | Tire Provided with Colored Appliques |
US20120273103A1 (en) * | 2011-04-27 | 2012-11-01 | Masahiro Ishida | Pneumatic tire |
US20120298270A1 (en) * | 2009-12-22 | 2012-11-29 | Eric Berger | Tyre tread having cavities and incisions |
US20140166173A1 (en) * | 2011-05-11 | 2014-06-19 | Compagnie Generale Des Etablissements Michelin | Tread combining inserts and sipes |
US20140318678A1 (en) * | 2011-12-20 | 2014-10-30 | Michelin Recherche Et Technique S.A. | Transverse grooves providing venting in treads for retreaded tires |
US8939183B2 (en) | 2008-12-22 | 2015-01-27 | Compagnie Generale Des Etablissements Michelin | Tread with an improved drainage space |
US9387728B2 (en) | 2010-10-29 | 2016-07-12 | Compagnie Generale Des Etablissements Michelin | Tire tread having a plurality of wear layers |
WO2016156705A1 (en) * | 2015-04-01 | 2016-10-06 | Compagnie Generale Des Etablissements Michelin | Tyre comprising a tread layer containing channels |
WO2017074459A1 (en) * | 2015-10-30 | 2017-05-04 | Compagnie Generale Des Etablissements Michelin | Tire sculpture having thin sipes, teardrops and low lateral void ratio |
US10773556B2 (en) | 2014-09-30 | 2020-09-15 | Compagnie Generale Des Etablissements Michelin | Tire tread comprising variable thickness sipes with multiple areas of reduced thickness |
US11186054B2 (en) | 2015-09-30 | 2021-11-30 | Compagnie Generale Des Etablissements Michelin | Variable thickness sipes |
US11338618B2 (en) | 2015-09-30 | 2022-05-24 | Compagnie Generale Des Etablissements Michelin | Egg crate sidewall features for sipes |
US20220258543A1 (en) * | 2019-06-14 | 2022-08-18 | Bridgestone Corporation | Pneumatic tire |
EP3984772A4 (en) * | 2019-06-12 | 2023-01-18 | Bridgestone Corporation | Pneumatic tire |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61132105U (en) * | 1985-02-07 | 1986-08-18 | ||
ES2116323T3 (en) * | 1991-11-01 | 1998-07-16 | Bridgestone Corp | TIRE. |
FR2763892A1 (en) * | 1997-05-30 | 1998-12-04 | Michelin & Cie | SCULPTURE AND MOLD FOR TIRE TREAD |
US6102092A (en) * | 1998-06-17 | 2000-08-15 | Michelin Recherche Et Technique S.A. | Tire having sacrificial bridging |
US6467517B1 (en) | 1999-06-15 | 2002-10-22 | Michelin Recherche Et Technique S.A. | Tire having sacrificial bridging |
DE60214915T2 (en) | 2001-02-20 | 2007-04-19 | Société de Technologie Michelin | Mold and method for molding a tire tread |
-
1936
- 1936-06-13 US US85099A patent/US2121955A/en not_active Expired - Lifetime
-
1937
- 1937-06-05 GB GB15625/37A patent/GB474588A/en not_active Expired
Cited By (72)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2701598A (en) * | 1951-09-25 | 1955-02-08 | Goodrich Co B F | Tire tread |
US2784835A (en) * | 1952-10-02 | 1957-03-12 | Goodrich Co B F | Skid-resistant conveyor belting |
US2962072A (en) * | 1959-04-27 | 1960-11-29 | Frank O Skidmore | Pneumatic tire and method of making the same |
US3115919A (en) * | 1962-04-27 | 1963-12-31 | Armstrong Rubber Co | Tire tread |
US3511290A (en) * | 1965-09-07 | 1970-05-12 | Dunlop Co Ltd | Tires |
US3556190A (en) * | 1967-04-21 | 1971-01-19 | Dunlop Co Ltd | C tires |
US3544423A (en) * | 1967-06-01 | 1970-12-01 | American Biltrite Rubber Co | Loom roll cover |
JPS62241712A (en) * | 1986-04-14 | 1987-10-22 | Ohtsu Tire & Rubber Co Ltd | Tread part structure of pneumatic tire |
US4807679A (en) * | 1987-06-11 | 1989-02-28 | The Goodyear Tire & Rubber Company | Pneumatic tire tread having sipes |
US4856571A (en) * | 1987-06-11 | 1989-08-15 | The Goodyear Tire & Rubber Company | Pneumatic tire |
US4926919A (en) * | 1988-11-14 | 1990-05-22 | The Goodyear Tire & Rubber Company | Vehicle tire with rib type tread pattern having sipes across the ribs |
US5385189A (en) * | 1991-11-01 | 1995-01-31 | Bridgestone Corporation | Pneumatic tire with paired sides in the tread |
US6203640B1 (en) | 1994-02-22 | 2001-03-20 | Pirelli Coordinamento Pneumatici S.P.A. | Medium/heavy duty motor-vehicle tires provided with a tread of the universal type |
US5795415A (en) * | 1994-02-22 | 1998-08-18 | Pirelli Coordinamento Pneumatici S.P.A. | Medium/heavy duty motor-vehicle tires provided with a tread of the universal type |
US5801304A (en) * | 1995-10-09 | 1998-09-01 | Pirelli Coordinamento Pneumatici S.P.A. | Method of foreseeing tread wearing of a pneumatic tire |
US6609417B1 (en) | 1995-10-09 | 2003-08-26 | Pirelli Coordinamento Pneumatici Spa | Method of foreseeing and controlling tread wearing in a pneumatic tire and a related pneumatic tire |
US6151959A (en) * | 1996-10-10 | 2000-11-28 | Pirelli Coordinamento Pneumatici Spa | Pneumatic tire having tread wear detectors |
US6202725B1 (en) * | 1997-02-27 | 2001-03-20 | Bridgestone Corporation | Pneumatic tire and vulcanization mold used for the manufacture thereof |
US6213181B1 (en) | 1998-01-26 | 2001-04-10 | Michelin Recherche Et Technique S.A. | Tire having a groove wall lining for reducing formation of anomalies causing subjective user dissatisfaction |
US6443200B1 (en) * | 1999-03-10 | 2002-09-03 | Michelin Recherche Et Technique S.A. | Tread including relief elements having undercut lateral walls and incision that does not cut into ridge |
WO2002038399A3 (en) * | 2000-11-13 | 2002-07-18 | Michelin Soc Tech | Tyre running tread and moulding element of a mould for such a tread |
US7530802B2 (en) | 2000-11-13 | 2009-05-12 | Michelin Recherche Et Technique S.A. | Molding element for a mould for molding a cutout in a tire tread |
US20030201048A1 (en) * | 2000-11-13 | 2003-10-30 | Michelin Recherche Et Technique S.A. | Tire tread and molding element for a mould for such a tread |
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US7017634B2 (en) | 2000-11-13 | 2006-03-28 | Michelin Recherche Et Technique S.A. | Tire tread including hollowed zones |
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US20040016491A1 (en) * | 2001-01-29 | 2004-01-29 | Michelin Recherche Et Technique S.A. | Tread which reduces running noise |
US7213625B2 (en) * | 2001-01-29 | 2007-05-08 | Michelin Recherche Et Technique S.A. | Tread which reduces running noise |
US7188650B2 (en) | 2004-12-28 | 2007-03-13 | The Goodyear Tire & Rubber Company | Siped tire tread with high transverse stiffness |
US20060137793A1 (en) * | 2004-12-28 | 2006-06-29 | Goodyear Tire And Rubber Company | Siped tire tread with high transverse stiffness |
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US7793692B2 (en) | 2005-10-31 | 2010-09-14 | The Goodyear Tire & Rubber Company | Pneumatic tire tread having sipe that devolves into groove as tread wears |
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US8776847B2 (en) | 2007-12-21 | 2014-07-15 | Michelin Recherche Et Technique S.A. | Mechanisms for ejecting objects from a tire tread |
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US20110030863A1 (en) * | 2008-03-17 | 2011-02-10 | Radulescu Robert C | Tire with apertured shoulder block for improved temperature control |
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US8820372B2 (en) * | 2008-12-05 | 2014-09-02 | Compagnie Generale Des Etablissements Michelin | Tire tread comprising incisions and recesses |
US20120006458A1 (en) * | 2008-12-05 | 2012-01-12 | Michelin Recherche Et Technique S.A. | Tire Tread Comprising Incisions and Recesses |
US8939183B2 (en) | 2008-12-22 | 2015-01-27 | Compagnie Generale Des Etablissements Michelin | Tread with an improved drainage space |
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US20120180919A1 (en) * | 2009-03-18 | 2012-07-19 | Societe De Technologie Michelin | Tire Provided with Colored Appliques |
US8393365B2 (en) | 2009-12-11 | 2013-03-12 | The Goodyear Tire & Rubber Company | Tire tread having serrated grooves |
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US9393841B2 (en) * | 2009-12-22 | 2016-07-19 | Compagnie Generale Des Etablissements Michelin | Tyre tread having cavities and incisions |
US9387728B2 (en) | 2010-10-29 | 2016-07-12 | Compagnie Generale Des Etablissements Michelin | Tire tread having a plurality of wear layers |
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US8881782B2 (en) * | 2011-04-27 | 2014-11-11 | The Yokohama Rubber Co., Ltd. | Pneumatic tire |
US9174496B2 (en) * | 2011-05-11 | 2015-11-03 | Compagnie Generale Des Establissements Michelin | Tread combining inserts and sipes |
US20140166173A1 (en) * | 2011-05-11 | 2014-06-19 | Compagnie Generale Des Etablissements Michelin | Tread combining inserts and sipes |
US20140318678A1 (en) * | 2011-12-20 | 2014-10-30 | Michelin Recherche Et Technique S.A. | Transverse grooves providing venting in treads for retreaded tires |
US10150269B2 (en) * | 2011-12-20 | 2018-12-11 | Compagnie Generale Des Etablissements Michelin | Transverse grooves providing venting in treads for retreaded tires |
US10773556B2 (en) | 2014-09-30 | 2020-09-15 | Compagnie Generale Des Etablissements Michelin | Tire tread comprising variable thickness sipes with multiple areas of reduced thickness |
US10882362B2 (en) | 2014-09-30 | 2021-01-05 | Compagnie Generale Des Etablissements Michelin | Stiffeners for sipe-molding members |
WO2016156705A1 (en) * | 2015-04-01 | 2016-10-06 | Compagnie Generale Des Etablissements Michelin | Tyre comprising a tread layer containing channels |
FR3034357A1 (en) * | 2015-04-01 | 2016-10-07 | Michelin & Cie | PNEUMATIC COMPRISING A BEARING BELT COMPRISING CHANNELS |
CN107454875A (en) * | 2015-04-01 | 2017-12-08 | 米其林企业总公司 | Include the tire of the tread ply comprising passage |
US20180104992A1 (en) * | 2015-04-01 | 2018-04-19 | Compagnie Generale Des Etablissements Michelin | Tire Comprising A Tread Layer Containing Channels |
CN107454875B (en) * | 2015-04-01 | 2020-03-10 | 米其林企业总公司 | Tire comprising a tread layer comprising channels |
US11186054B2 (en) | 2015-09-30 | 2021-11-30 | Compagnie Generale Des Etablissements Michelin | Variable thickness sipes |
US11338618B2 (en) | 2015-09-30 | 2022-05-24 | Compagnie Generale Des Etablissements Michelin | Egg crate sidewall features for sipes |
WO2017075373A1 (en) * | 2015-10-30 | 2017-05-04 | Compagnie Generale Des Etablissements Michelin | Tire sculpture having thin sipes, teardrops and low lateral void ratio |
WO2017074459A1 (en) * | 2015-10-30 | 2017-05-04 | Compagnie Generale Des Etablissements Michelin | Tire sculpture having thin sipes, teardrops and low lateral void ratio |
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US20220258543A1 (en) * | 2019-06-14 | 2022-08-18 | Bridgestone Corporation | Pneumatic tire |
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